I want to say my ideas.
1). Professional and Standard edition, What does it mean?
For me, a Standard edition is for "playing" , and the PRO edition is for "flying".
In Standard Version:
a). Common Aircraft's like FSX.
. Normal scenery
c). Normal flight system
d). Normal Interface
In PRO Version:
a). NO Aircrafts! only just one or two good designed.
. A professional weather engine. Not like FSX or FS9. Real Turbulence, predictable forecast (like where is going to rain, or accurate wind-shear simulation). METAR interpretation and random weather generation . Easy-to-develop system so other 3th party companies can make their own weather system (like REX), or making accurate and realist weather radars.
c). A professional flight dynamics. So the aircraft responds like in the real world.
d). FSUIPC compatibility.
e). Real airport environment.
f). It's not needed a complex scenery database, because anyway we are going to buy other better scenery's.
g). An updated NavDatabase.
h). Professional development tools.
i). A good Flight Planner.
j). Your own VATSIM and IVAO connection system.